Locomotive for elevated railways.



No. 641,794. M A. PATTON Patented Ian. 23', I900.

LUCOMOTIVE FOR ELEVATED RAILWAYS.

2 Sheets-Sheat I (No Model.)

54M) auto p Patented Ian. 23, neon.

- m. A. PATTON.

' LOCOMOTIVE FDR ELEVATED RAILWAYS.

(Application filed July 27, v1899.

(No Model.)

2 Sheets-Sheet 2.

NITED STATES PATENT QFFIC E.

MATHIAS A; PATTON, oF'LIvINesToN, MONTANA.

LOCOMOTIVE FOR ELEVATED RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 641,794, dated January 23, 1900.

Application filed July 27, 1899. Serial No. 725,298. (No model.)

T0 at whom it may concern.-

Be it known that I, MATHIAS A. PATTON, a citizen of the United States, residing at Li vingston, in the countyof Park and State of Montana, have invented certain new and useful Improvements in Locomotives for Elevated Railways; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying-drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in locomotives for elevated railways; and it consists in the provision of a truck carrying suitable propelling-wheels, which are adapted to run upon the elevated track, the wheels which propel the machine being supported on downwardly-extending projections of the truck, whereby the opposite sides of the truck may be equalized as to weight and form a means forsecurely holding the engine to the track, thus making it practically impossible for the truck to be-v come upset.

More specifically, the invention consists in the provision of an elevated locomotive-car adapted to travel upon an elevated structure and having a main operating-shaft, which has suitable connections with the driving mechanism of an engine, and the provision of clutches whereby the driving-wheels, which are loosely mounted upon the operating-shaft, may be thrown into gear with wheels which have sprocket-and-chain connections, whereby power may be transmitted to the axles of the car, on which axles the wheels are mounted, which travel on the elevated track.

Another feature of the invention consists of means whereby extra weight may be thrown upon the driving-wheels to assist in equalizing the Weight upon the different parts of the running-gear of the car.

To these ends and to such others as the invention may pertain the same consists, further, in the novel construction,combination,

and adaptation of parts, as will be hereinafter more fully described and then specifically defined in the appended claim.

My invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form part of this application, and in which drawings similar letters of reference indicate like parts throughout the several views, in which-- Figure l is a plan view showing my elevated locomotive mounted upon an elevated track. Fig. 2 is a cross-sectional view through the truck and a portion of the locomotive, and Fig. 3 is a side elevation of the engine. Fig. 4 is a detail view showing the eccentric and the shaft having the longitudinal and diagonally-disposed groove, in which a pin carried by the eccentric travels.

Reference now being had to the details of the drawings by letter, A designates an elevated structure consisting, preferably, of two parallel rails, a slight space intervening, these tracks being supported, preferably, upon a single row of posts A.

The truck B of my improved locomotive for elevated railways is made with two downwardly-depending portions B, which extend, preferably, at an inclined angle, as shown, and mounted upon shafts carried by the truck are the wheels 0, said wheels adapted to run upon the parallel rails of the elevated structure. Also mounted between the bed-rails of the truck is the main operating-shaft D, mounted in suitable bearings and having .crank-and-pitman connections D with a steam-chest E, in which a piston reciprocates, which piston is connected to the eccentricrod D. There are preferably twoof these steam-chests, one on either side of the truck and each similarly constructed and connected to the main operating-shaft. The truck is equally balanced by means of engines, one mounted on each side of the truck on the downwardly-depending portion, and suitable provision is made adjacent to the boilers for carrying fuel. Near each end of the-main operating-shaft is an eccentric F, which is connected by suitable rods F with the slidevalves F which control the ports through which steam is allowed to enter the cylinders carrying the reciprocating piston-heads, and each of said eccentrics carries a lug on its apertured portion, which slides over the main operating-shaft, said lug traveling in a spiral recess or groove in the main operatingshaft, as illustrated in the drawings, and by means of the operating-lever H, which has pivotal connections with the rods 1, said rods I carrying bracket members or fingers engaging on either side of each eccentric, said eccentrics may be moved longitudinally upon the main operating-shaft for the purpose of changing the position of said eccentrics with relation to the shaft to cause the engine to go ahead or be reversed.

In order to allow the eccentric to move laterally or longitudinally on the shaft D and one end of the eccentric-rod F, I provide a joint between the head of the rod F and said rod F, as at F, whereby as the head F to which the rod F is pivoted, reciprocates in the guide-box F the eccentric end of the rod F is allowed to move laterally as the eccentric is shifted.

Mounted loosely upon the main operatingshaft are the wheels M, each of which has a series of teeth about its inner periphery, and mounted upon and rotating with the main operating-shaft is a clutch member L, which has pivoted theretoa lever L, whereby said clutch may he slid longitudinally upon the operating-shaft. 'lhis clutch is adapted to engage with the wheel M, which has integral therewith a sprocketwheel M, and as said clutch is thrown into gear with the driving-wheel the latter and the sprocket-wheel are caused to rotate together. There are two of these clutches similarly constructed mounted on each side of the center or middle portion of the main operating-shaft, and each sprocketwheel has chain connection N with sprocketwheels 0, mounted upon the counter-shaft Q, and upon said counter-shaft Q are the sprocket-wheels R, which have chain connections with the sprocket-wheels S, mounted on the shafts T, which carry the car-wheels 0, whereby power is transmitted from the main operating-shaft to the axles carrying the wheels on which the truck is mounted, which car-wheels travel upon the parallel rails.

From the foregoing it will be observed that in the provision of a locomotive for elevated railways constructed in accordance with my invention the locomotive will be confined to the parallel rails of the elevated track, the driving mechanism may be easily thrown into gear, and the engines, which have connection to the main driving-shaft, may be easily reversed, and a suitable locomotive will be produced for hauling freight and suitably adapted for use in mining operations and for other purposes.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is

A locomotive for elevated railways comprising in combination the truck having downwardly and outwardly extending beams, the truck-Wheels, the braces on the sides of the truck-frame, the operating-shaft mounted in said braces, the driving-wheel loosely mounted on said shaft and the clutch turning with the shaft and designed to engage said drivewheel, the sprocket-wheel turning with the drive-wheel, the counter-shafts Q and T, the sprocket-wheel turning with the latter and chain connection with said sprocket-wheels, the eccentric movable longitudinally on the operating-shaft, the steam-chest, piston-stem and connections between same and a crank on the operating-shaft, the slide-valve to the steam-chest, the rod F secured to the slidevalve, and the rod F havingat one end jointed connection with said rod F, and its other end connected to the eccentric, and means for shifting the latter, as set forth.

In testimony WhereofI affix my signature in presence of two witnesses.

MATHIAS A. PAT'ION.

\Vitnesses:

HUGH MILLER, R03? L. MEAD. 

